TL:DR; PDFLock - A developer dll for setting all security options, main- and user-password, encryption type .
PDFLock - A developer dll for setting all security options, main- and user-password, encryption type ... Royalty free! Easy to use! For all well known IDEs (.NET, too!).
PGPBlackbox (ActiveX edition) is a comprehensive collection of components that add PGP support to your Visual Basic applications. Data encryption, signing, compression and key generation, revocation, keyring management operations are supported.
Enables you to encrypt and decrypt string with a password with MD2, MD4, MD5, SHA hashing and RC2, RC4, DES, 3DES or 3DES 128 byte encryption.
FlexCell is a flexible and easy to use grid control. It provides comprehensive functions such as Print, Print Preview, Chart, Virtual Grid, Sort, Import and Export XML, Export to Excel Workbook (no need of Excel runtime support), etc.